7716749 has 4 divisors (see below), whose sum is σ = 7722336. Its totient is φ = 7711164.

The previous prime is 7716743. The next prime is 7716763. The reversal of 7716749 is 9476177.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 9476177 = 2953 ⋅3209.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7716749 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7716743) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 962 + ... + 4044.

It is an arithmetic number, because the mean of its divisors is an integer number (1930584).

Almost surely, 2^7716749 is an apocalyptic number.

It is an amenable number.

7716749 is a deficient number, since it is larger than the sum of its proper divisors (5587).

7716749 is a wasteful number, since it uses less digits than its factorization.

7716749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5586.

The product of its digits is 74088, while the sum is 41.

The square root of 7716749 is about 2777.9037060345. The cubic root of 7716749 is about 197.6111557160.

The spelling of 7716749 in words is "seven million, seven hundred sixteen thousand, seven hundred forty-nine".